Patent US4924763A successfully refreshed from Google Patents.
US4924763A
Expired / Lapsed
US
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Compact pizza oven
Assignee: Pizza Hut LLC
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Filing: 1988-10-17
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Granted: 1990-05-15
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Expires: 2008-10-17
Abstract
Abstract The present invention is a compact pizza oven which includes a baking chamber and a means for heating air. A fan means is provided for impelling the heated air through a top and bottom orifice toward the pizza. The oven also includes an oven door for closing and opening the baking chamber and a turntable upon which the pizza is rotated about its center while it is baked.
Inventors
- 👤 Lynn R. Bingham
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 03:44
CPC Classifications
A; A47; A47J; A47J37/00; A47J37/04; A47J37/046; A21; A21B; A21B1/00; A21B1/02; A21B1/24; A21B1/26
Claims Analysis
Total Claims: 22
Claim 1
Independent Claim
89 words
A compact pizza oven comprising: a baking chamber; means for heating air; fan means for impelling heated air; an oven door; a turntable upon which a pizza is rotated about its center; at least one top orifice in the baking chamber through which heated air is impelled toward the top of the pizza as it is rotated on the turntable; and at least one bottom orifice in the baking chamber through which heated air is impelled toward the bottom of the pizza as it is rotated on the turntable.
Claim 2
Dependent Claim
89 words
A compact pizza oven comprising: a baking chamber; means for heating air; fan means for impelling heated air; an oven door; a turntable upon which a pizza is rotated about its center; at least one top orifice in the baking chamber through which heated air is impelled toward the top of the pizza as it is rotated on the turntable; and at least one bottom orifice in the baking chamber through which heated air is impelled toward the bottom of the pizza as it is rotated on the turntable.
Claim 3
Dependent Claim
12 words
The oven of claim 1 wherein the top orifice is a slot.
Claim 4
Dependent Claim
12 words
The oven of claim 1 wherein the bottom orifice is a slot.
Claim 5
Dependent Claim
12 words
The oven of claim 3 wherein the top orifice is a slot.
Claim 6
Dependent Claim
38 words
The oven of claim 1 wherein the top orifice is a slot with a length substantially equal to the diameter of the turntable and wherein the midpoint of the slot is generally above the center of the turntable.
Claim 7
Dependent Claim
38 words
The oven of claim 1 wherein the bottom orifice is a slot with a length substantially equal to the diameter of the turntable and wherein the midpoint of the slot is generally below the center of the turntable.
Claim 8
Dependent Claim
38 words
The oven of claim 6 wherein the top orifice is a slot with a length substantially equal to the diameter of the turntable and wherein the midpoint of the slot is generally above the center of the turntable.
Claim 9
Dependent Claim
40 words
The oven of claim 1 wherein the oven door is hinged on one vertical side and wherein the turntable is connected to the door whereby the turntable is brought out of the baking chamber when the door is swung open.
Claim 10
Dependent Claim
18 words
The oven of claim 8 wherein the turntable is powered by a motor located on the oven door.
Claim 11
Dependent Claim
53 words
The oven of claim 8 wherein the oven further comprises a closing plate hingedly attached above the oven door, which closing plate is adapted to swing down and close the baking chamber when the oven door is swung open and is adapted to be pushed open when the oven door is swung closed.
Claim 12
Dependent Claim
23 words
The oven of claim 1 further comprising oven controller means including a timer means for setting a proper baking cycle for each pizza.
Claim 13
Dependent Claim
55 words
The oven of claim 11 wherein the oven controller means further comprises energy saving means for switching the fan means from an idle speed to a faster baking speed at the beginning time of the baking cycle, and for switching the fan means back to the idle speed at the end of the baking cycle.
Claim 14
Dependent Claim
38 words
The oven of claim 12 wherein the energy saving means further includes means for switching the turntable on at the beginning of the baking cycle, and for switching the turntable off at the end of the baking cycle.
Claim 15
Dependent Claim
30 words
The oven of claim 11 wherein the pizza oven further comprises actuating means for automatically opening the oven door in response to a signal generated by the oven controlling means.
Claim 16
Dependent Claim
19 words
The oven of claim 1 wherein the pizza oven further comprises actuating means for automatically opening the oven door.
Claim 17
Dependent Claim
175 words
A compact pizza oven comprising: a first and second baking chamber; first and second means for heating air; first and second fan means for impelling heated air in the first and second baking chamber respectively; a first and second oven door; a first and second turntable upon which pizzas are rotated about their center; at least one top orifice in the first baking chamber through which heated air is impelled toward the top of the pizza as it is rotated on the first turntable; at least one bottom orifice in the first baking chamber through which heated air is impelled toward the bottom of the pizza as it is rotated on the first turntable at least one top orifice in the second baking chamber through which heated air is impelled toward the top of the pizza as it is rotated on the second turntable; and at least one bottom orifice in the second baking chamber through which heated air is impelled toward the bottom of the pizza as it is rotated on the second turntable.
Claim 18
Dependent Claim
175 words
A compact pizza oven comprising: a first and second baking chamber; first and second means for heating air; first and second fan means for impelling heated air in the first and second baking chamber respectively; a first and second oven door; a first and second turntable upon which pizzas are rotated about their center; at least one top orifice in the first baking chamber through which heated air is impelled toward the top of the pizza as it is rotated on the first turntable; at least one bottom orifice in the first baking chamber through which heated air is impelled toward the bottom of the pizza as it is rotated on the first turntable at least one top orifice in the second baking chamber through which heated air is impelled toward the top of the pizza as it is rotated on the second turntable; and at least one bottom orifice in the second baking chamber through which heated air is impelled toward the bottom of the pizza as it is rotated on the second turntable.
Claim 19
Dependent Claim
17 words
The oven of claim 16 wherein the first baking chamber is located above the second baking chamber.
Claim 20
Dependent Claim
49 words
The oven of claim 16 wherein the first and second top orifices are slots each with a length substantially equal to the diameter of the first and second turntable respectively and wherein the midpoint of each slot is generally above the center of the first and second turntable respectively.
Claim 21
Dependent Claim
49 words
The oven of claim 16 wherein the first and second bottom orifices are slots each with a length substantially equal to the diameter of the first and second turntable respectively and wherein the midpoint of each slot is generally below the center of the first and second turntable respectively.
Claim 22
Dependent Claim
49 words
The oven of claim 19 wherein the first and second top orifices are slots each with a length substantially equal to the diameter of the first and second turntable respectively and wherein the midpoint of each slot is generally above the center of the first and second turntable respectively.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1993-05-14 | 1993-11-13 | 1994-05-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1997-05-14 | 1997-11-13 | 1998-05-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2001-05-14 | 2001-11-13 | 2002-05-15 | $7700.00 | Window Closed / Lapsed |